Flexible electrode and sensor element
a sensor element and flexible technology, applied in the direction of dielectric characteristics, variable capacitors, instruments, etc., can solve the problems of lack of flexibility of metal foil type and semiconductor type sensors in widespread use, and achieve the effect of reducing the resistance change ra
Active Publication Date: 2021-03-02
NEC CORP
View PDF18 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The flexible electrode exhibits reduced resistance change rate and enhanced stability upon repeated stretching, making it suitable for wearable health monitoring devices that require accurate detection of human movement and health conditions.
Problems solved by technology
However, since metal foil type and semiconductor type sensors currently in widespread use lack flexibility, a new sensor element having flexible electrodes that can be stretched and can detect human movement and health condition has been required.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
example 1
[0071]The mixture (50 mg) of the fibrous carbon nanohorn aggregate and the spherical carbon nanohorn aggregate was added to 50 mg of methyl isobutyl ketone and subjected to ultrasonic dispersion treatment for 1 hour. The mixture was further mixed with stirring at 2000 rpm for 3 minutes to prepare a paste. The obtained paste was applied to a 0.5 mm thick substrate manufactured by using polydimethylsiloxane (PDMS) and dried to obtain a flexible electrode having an electrode film with a thickness of 20 μm. As shown in FIG. 6, the electrode terminals 63 and 64 were attached to both ends of the electrode film 61, and the substrate 62 was stretched. In the measurement, the resistance changes in the cycle of pulling until the strain to the substrate reached 5% and then relaxing the strain was measured. It was confirmed that the resistance increased by applying strain and the resistance decreased by relaxing the strain. Table 1 shows the resistance change rate (ΔR / R0) after 2, 3, and 20 tim...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
A flexible electrode is provided in which an increase in resistance change rate caused by repeated stretch is reduced. A sensor element is also provided, which uses the flexible electrode. A strain sensor, a pressure sensor, and a temperature sensor are also provided, each using the sensor element. The flexible electrode can include an insulating flexible substrate and an electrode film laminated on the flexible substrate. The electrode film can include a fibrous carbon nanohorn aggregate.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a National Stage of International Application No. PCT / JP2017 / 028379 filed Aug. 4, 2017, claiming priority based on Japanese Patent Application No. 2016-164661 filed Aug. 25, 2016, and the disclosure thereof is entirely incorporated herein.TECHNICAL FIELD[0002]The present invention relates to a flexible electrode and a sensor element comprising the flexible electrode.BACKGROUND ART[0003]In recent years, the development of wearable devices with the aim of application to health monitoring and the like has been actively conducted. However, since metal foil type and semiconductor type sensors currently in widespread use lack flexibility, a new sensor element having flexible electrodes that can be stretched and can detect human movement and health condition has been required.[0004]Patent Literature 1 discloses a wiring obtained by mixing a polyurethane dispersion liquid and conductive particles, applying the mixture to a fle...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(United States)
IPC IPC(8): G01L1/00H01G5/011H01C17/065B82Y30/00H01C7/00B82Y40/00H01G11/36C01B32/182G01B7/16G01L1/14H05K1/02
CPCH01G5/011B82Y30/00B82Y40/00C01B32/182G01B7/22G01L1/146H01C7/00H01C17/065H01G11/36H05K1/0277B82Y15/00G01B7/18H05K1/167H05K2201/0133H05K1/0393H05K1/097H05K2201/026H05K2201/0323H05K2201/09263G01L1/20
Inventor YUGE, RYOTA
Owner NEC CORP